well what i did...i dont know if its the correct way or the best way but it worked well for me...took a wire coat hanger and used that as brazeing rod...took a torch and sealed up all the cracks...all the cracks i fixed are still holding up fine but a few new ones showed up...i need to pull up the carpet and do it again...i dident use another sheet of steel either under it...but i am sure it wouldent hurt anything if ya did

If you can sandwich the area with some thick sheet metal it would be the best.
When I was doing a frame of on my 73, the whole section was rusted out so instead of getting a replacement, I got a 0.120 plate and formed it with a couple of bends to make it stronger and welded the nuts from under from the original floor.
Now I have a great thick bullet ptoof floor.
/forums/images/graemlins/thumb.gif

Useful Searches

>
About Us>
>
In May of 1999 CK5 started out as a tribute to America's favorite 4x4 utility truck. Since then it has grown to be
a leader among full size Chevrolet K5 Blazer and GMC Jimmy web sites across the Internet. CK5 has since expanded
to include the C/K series GM Truck and Suburban as well as past and present GM models.
>>
With its technical articles, factory specifications, photo gallery, classifieds, active message forum, product
reviews and original automotive content it's an unbeatable source.